Lisbon is rich in art and culture. Visit palaces and the cathedral, and hear concerts in gardens and live music in bars. Enjoy art galleries and the colorful tiles at Museu Nacional do Azulejo. (Note that many Lisbon museums are free on Sundays till 2 p.m.) Art can also be found in the streets or parking lots, where the walls are covered with street art. Lisbon's cultural offerings are many.